Validation of sea ice concentration - European sector
Bulletin date: 2025-07-03
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-27:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74898 |
8832 |
64 |
22 |
0 |
0 |
0 |
0 |
| OW |
143 |
1965 |
318 |
328 |
16 |
0 |
0 |
0 |
| VODI |
0 |
180 |
212 |
1097 |
251 |
8 |
1 |
0 |
| ODI |
0 |
0 |
4 |
378 |
1051 |
45 |
18 |
0 |
| CDI |
0 |
0 |
0 |
213 |
1150 |
1285 |
388 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
51 |
1954 |
4106 |
1433 |
|
...date precedes bulletin
|
Date: 2025-06-29:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76271 |
8169 |
30 |
18 |
0 |
0 |
0 |
0 |
| OW |
337 |
1617 |
309 |
193 |
10 |
0 |
0 |
0 |
| VODI |
10 |
319 |
198 |
851 |
175 |
2 |
1 |
0 |
| ODI |
0 |
11 |
57 |
456 |
903 |
59 |
6 |
8 |
| CDI |
0 |
0 |
0 |
317 |
1295 |
990 |
303 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
90 |
1218 |
4232 |
1949 |
|
...date precedes bulletin
|
Date: 2025-07-01:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77002 |
8768 |
48 |
9 |
0 |
0 |
0 |
0 |
| OW |
159 |
1244 |
413 |
438 |
5 |
0 |
1 |
0 |
| VODI |
0 |
17 |
64 |
1002 |
220 |
1 |
0 |
0 |
| ODI |
0 |
0 |
2 |
259 |
1136 |
21 |
0 |
8 |
| CDI |
0 |
0 |
0 |
7 |
1493 |
1235 |
51 |
14 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
1212 |
3867 |
1707 |
|
...date precedes bulletin
|
Date: 2025-07-03:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76691 |
9209 |
63 |
119 |
0 |
0 |
0 |
0 |
| OW |
82 |
1197 |
297 |
339 |
14 |
0 |
0 |
0 |
| VODI |
0 |
96 |
166 |
864 |
311 |
0 |
1 |
0 |
| ODI |
0 |
2 |
25 |
421 |
1416 |
41 |
6 |
3 |
| CDI |
0 |
0 |
3 |
113 |
1553 |
732 |
57 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
669 |
1843 |
3645 |
430 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76653 |
9278 |
82 |
133 |
0 |
0 |
0 |
0 |
| OW |
117 |
1117 |
285 |
347 |
15 |
0 |
0 |
0 |
| VODI |
3 |
109 |
163 |
847 |
273 |
0 |
1 |
0 |
| ODI |
0 |
0 |
23 |
431 |
1410 |
18 |
8 |
2 |
| CDI |
0 |
0 |
1 |
98 |
1580 |
804 |
61 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
685 |
1794 |
3639 |
430 |
|
Date: 2025-07-05:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77647 |
8251 |
49 |
33 |
0 |
0 |
0 |
0 |
| OW |
73 |
1223 |
207 |
336 |
28 |
0 |
0 |
0 |
| VODI |
1 |
171 |
195 |
1011 |
293 |
0 |
1 |
1 |
| ODI |
0 |
13 |
38 |
650 |
1321 |
36 |
10 |
13 |
| CDI |
0 |
0 |
2 |
109 |
1603 |
834 |
124 |
16 |
| VCDI |
0 |
0 |
0 |
0 |
292 |
2739 |
2754 |
342 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77610 |
8296 |
72 |
51 |
0 |
0 |
0 |
0 |
| OW |
110 |
1179 |
200 |
357 |
24 |
0 |
0 |
0 |
| VODI |
1 |
175 |
189 |
979 |
255 |
0 |
1 |
0 |
| ODI |
0 |
8 |
29 |
653 |
1295 |
35 |
12 |
13 |
| CDI |
0 |
0 |
1 |
99 |
1640 |
888 |
191 |
18 |
| VCDI |
0 |
0 |
0 |
0 |
323 |
2686 |
2685 |
341 |
|
Date: 2025-07-07:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78086 |
8487 |
50 |
23 |
2 |
0 |
0 |
0 |
| OW |
33 |
1177 |
462 |
636 |
11 |
0 |
0 |
0 |
| VODI |
0 |
22 |
50 |
1409 |
453 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
115 |
1552 |
22 |
0 |
0 |
| CDI |
0 |
0 |
0 |
7 |
1081 |
2533 |
170 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
1560 |
2457 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78034 |
7995 |
54 |
30 |
1 |
0 |
0 |
0 |
| OW |
85 |
1276 |
210 |
337 |
26 |
0 |
0 |
0 |
| VODI |
0 |
333 |
218 |
975 |
216 |
2 |
0 |
0 |
| ODI |
0 |
78 |
47 |
670 |
1193 |
47 |
10 |
0 |
| CDI |
0 |
4 |
33 |
178 |
1335 |
950 |
322 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
344 |
3118 |
2295 |
0 |
|
Date: 2025-07-09:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79232 |
7349 |
33 |
52 |
1 |
0 |
0 |
0 |
| OW |
111 |
1427 |
293 |
498 |
7 |
1 |
0 |
0 |
| VODI |
0 |
106 |
216 |
1408 |
339 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
223 |
1297 |
85 |
13 |
0 |
| CDI |
0 |
0 |
0 |
9 |
884 |
2352 |
451 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
50 |
2381 |
1593 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79113 |
6901 |
30 |
31 |
0 |
0 |
0 |
0 |
| OW |
199 |
1337 |
156 |
263 |
19 |
1 |
0 |
0 |
| VODI |
31 |
565 |
235 |
986 |
173 |
13 |
0 |
0 |
| ODI |
0 |
78 |
110 |
665 |
1033 |
113 |
39 |
0 |
| CDI |
0 |
1 |
11 |
245 |
1146 |
1120 |
323 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
207 |
3577 |
1695 |
0 |
|
Date: 2025-07-11:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79313 |
7054 |
16 |
59 |
11 |
0 |
0 |
0 |
| OW |
85 |
1592 |
212 |
505 |
14 |
0 |
0 |
0 |
| VODI |
0 |
267 |
218 |
1500 |
220 |
10 |
0 |
0 |
| ODI |
0 |
0 |
2 |
429 |
1358 |
59 |
17 |
0 |
| CDI |
0 |
0 |
0 |
13 |
1411 |
2469 |
368 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
2440 |
769 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79195 |
6837 |
17 |
52 |
8 |
0 |
0 |
0 |
| OW |
138 |
1336 |
137 |
310 |
10 |
0 |
0 |
0 |
| VODI |
65 |
592 |
221 |
1130 |
79 |
5 |
0 |
0 |
| ODI |
0 |
138 |
52 |
737 |
1132 |
76 |
48 |
0 |
| CDI |
0 |
10 |
21 |
277 |
1448 |
1273 |
351 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
342 |
3624 |
755 |
0 |
|
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